Siemens 6MD85 Manual page 587

Parameter Value
yes
no
Parameter: Reclai. time aft.succ.cyc.
•
Default setting (_:6601:103) Reclai. time aft.succ.cyc. = 3.00 s
With the Reclai. time aft.succ.cyc. parameter, set the time used to decide if the currently running
reclosing cycle was successful or not. Detailed information about the function of the reclaim time can be
found in the chapter
The presetting for the reclaim time can be frequently maintained. In regions where thunderstorms and storms
often occur, a shorter reclaim time makes sense in order to minimize the danger of the final disconnection due
to sequential lightning strikes or cable spark over.
Select a long reclaim time if there is no possibility for circuit-breaker supervision with multiple automatic
reclosing, for example, due to missing auxiliary contacts or lacking circuit-breaker-ready-information. In this
case, the reclaim time must be longer than the recovery time of the circuit breaker.
Parameter: Block. time aft. man.close
•
Default setting (_:6601:104) Block. time aft. man.close = 1.00 s
With the Block. time aft. man.close parameter, the time is determined for which the automatic
reclosing should be blocked after a manual connection.
Set the time so that the circuit breaker can be safely switched on and off during connection to a short circuit
without the automatic reclosing function being automatically closed.
Parameter: Start signal supervis.time
•
Default setting (_:6601:105) Start signal supervis.time = 0.25 s
With the Start signal supervis.time parameter, set the maximum time after which a circuit breaker
must be opened after a trip command. If the time expires, a failure of the circuit breaker is assumed and the
automatic reclosing function is dynamically blocked.
Detailed information about the function of the start supervision time can be found in the chapter
7.2.4.5 Start.
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017
Description
The automatic reclosing function checks the readiness of the circuit breaker for
a switching cycle, consisting of a tripping-reclosing-switching.
If the circuit breaker is ready - signaled through a binary input - the startup of
the automatic reclosing function can occur. If the circuit breaker is not ready,
the automatic reclosing function reports the static blocking.
Siemens recommends using this setting.
Note: The presetting of this parameter does not correspond with the recom-
mended setting for operation. The automatic reclosing function would other-
wise be blocked with a non-available circuit breaker-ready-signal. Please set the
parameter as recommended.
The readiness of the circuit breaker is not checked before starting the automatic
reclosing function. The test also does not occur if the readiness signal from the
circuit breaker is connected to a binary input on the device.
7.2.4.15 Reclaim Time.
Protection and Automation Functions
7.2 Automatic Reclosing Function
587